Camera lens

ABSTRACT

The present disclosure discloses a camera lens. The camera lens including, in an order from an object side to an image side, a first lens having a positive refractive power, a second lens having a negative refractive power, a third lens having a positive refractive power, a fourth lens having a negative refractive power, a fifth lens having a positive refractive power, and a sixth lens having a negative refractive power. The camera lens further satisfies specific conditions.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority benefit of Japanese PatentApplications Ser. No. 2018-055050 filed on Mar. 22, 2018, the entirecontent of which is incorporated herein by reference.

FIELD OF THE PRESENT DISCLOSURE

The present disclosure relates to optical lens, in particular to acamera lens suitable for handheld devices such as smart phones anddigital cameras and imaging devices.

DESCRIPTION OF RELATED ART

With the emergence of smart phones in recent years, the demand forminiature camera lens is increasing day by day, but the photosensitivedevices of general camera lens are no other than Charge Coupled Device(CCD) or

Complementary metal-Oxide Semiconductor Sensor (CMOS sensor), and as theprogress of the semiconductor manufacturing technology makes the pixelsize of the photosensitive devices shrink, coupled with the currentdevelopment trend of electronic products being that their functionsshould be better and their shape should be thin and small, miniaturecamera lens with good imaging quality therefor has become a mainstreamin the market.

Traditional camera lens includes 6 lenses, from the object side to theimage side, comprising in sequence: a first lens, a second lens, a thirdlens, a fourth lens, a fifth lens, and a sixth lens. But the refractiveindex distribution of the third lens and the shape of the third lens andthe fifth lens are insufficient, so that, in order to realizeFno=1.82˜1.83, although the light flux is high, but the ultra-thin isinsufficiency. Other traditional camera lenses also includes 6 lenses,but the refractive index distribution of the third lens and the shape ofthe third lens and the fifth lens are insufficient, so that, in order torealize Fno≥2.15, the luminance is insufficient.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the exemplary embodiments can be better understood withreference to the following drawings. The components in the drawing arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present disclosure.

FIG. 1 is a schematic diagram of a camera lens LA in accordance with anembodiment of the present invention;

FIG. 2 is a schematic diagram of the camera lens LA in accordance with afirst embodiment of the present invention;

FIG. 3 shows the longitudinal aberration of the camera lens LA shown inFIG. 1;

FIG. 4 shows the lateral color of the camera lens LA shown in FIG. 1;

FIG. 5 presents a schematic diagram of the field curvature anddistortion of the camera lens LA shown in FIG. 1;

FIG. 6 is a schematic diagram of a camera lens LA in accordance with asecond embodiment of the present invention;

FIG. 7 presents the longitudinal aberration of the camera lens LA shownin FIG. 6;

FIG. 8 presents the lateral color of the camera lens LA shown in FIG. 6;

FIG. 9 presents the field curvature and distortion of the camera lens LAshown in FIG. 6;

FIG. 10 is a schematic diagram of a camera lens LA in accordance with athird embodiment of the present invention;

FIG. 11 presents the longitudinal aberration of the camera lens LA shownin FIG. 10;

FIG. 12 presents the lateral color of the camera lens LA shown in FIG.10;

FIG. 13 presents the field curvature and distortion of the camera lensLA shown in FIG. 10.

DETAILED DESCRIPTION OF THE EXEMPLARY EMBODIMENTS

The present disclosure will hereinafter be described in detail withreference to several exemplary embodiments. To make the technicalproblems to be solved, technical solutions and beneficial effects of thepresent disclosure more apparent, the present disclosure is described infurther detail together with the figure and the embodiments. It shouldbe understood the specific embodiments described hereby is only toexplain the disclosure, not intended to limit the disclosure.

As referring to FIG. 1, the present invention provides a camera lens LA.FIG. 1 shows a schematic diagram of a camera lens LA in accordance withan embodiment of the present invention. The camera lens LA comprises 6lenses. Specifically, from the object side to the image side, the cameralens LA comprises in sequence: a first lens L1, a second lens L2, athird lens L3, a fourth lens L4, a fifth lens L5, and a sixth lens L6. Aglass plate GF may be arranged between the sixth lens L6 and the imagesurface Si or not be arranged between the sixth lens L6 and the imagesurface Si. The glass plate GF is a cover-glass or a filter with IRcut-off function.

The first lens L1 has a positive refractive power, the second lens L2has a negative refractive power, the third lens L3 has a positiverefractive power, the fourth lens L4 has a negative refractive power,the fifth lens L5 has a positive refractive power, and the sixth lens L6has a negative refractive power. In order to correct aberration problem,the surface of the six lens L6 should be designed to aspherical surface.

The camera lens LA satisfies the following conditions (1)˜(3):10.00≤f3/f≤15.00  (1)−4.80≤(R5+R6)/(R5−R6)≤−4.20  (2)−0.40≤(R11+R12)/(R11−R12)≤−0.20  (3)

where

f: the focal length of the camera lens;

f3: the focal length of the third lens;

R5: the curvature radius of the object side surface of the third lens;

R6: the curvature radius of the image side surface of the third lens;

R11: the curvature radius of the object side surface of the sixth lens;

R12: the curvature radius of the image side surface of the sixth lens.

Condition (1) fixes the positive refractive power of the third lens L3.When the value of the upper condition (1) is exceeded, and it is alsounfavorable for high light flux, excellent optical characteristics, andultra-thin development of lens.

Condition (2) fixes the shape of the third lens L3. When the value ofthe upper condition (2) is exceeded, and it is also unfavorable for highlight flux, excellent optical characteristics, and miniaturizationdevelopment of lens.

Condition (3) fixes the shape of the fifth lens L5. When the value ofthe upper condition (3) is exceeded, and it is also unfavorable for highlight flux, excellent optical characteristics, and miniaturizationdevelopment of lens.

The camera lens LA further satisfies the following condition (4):0.12≤d10/f≤0.14  (4)

where

f: the focal length of the camera lens;

d10: the distance on-axis from the image side surface of the fifth lensto the object side surface of the sixth lens.

Condition (4) fixes the distance on-axis from the image side surface ofthe fifth lens to the object side surface of the sixth lens. When thevalue of the upper condition (4) is exceeded, and it is also unfavorablefor high light flux, excellent optical characteristics, andminiaturization development of lens.

Because the 6 lens of the camera lens LA satisfy the foresaidconditions, the camera lens LA can be manufactured with excellentoptical characteristics, ultra-thin and high light flux (Fno).

The design information of the camera lens LA in an embodiment of thepresent invention is shown in the following, the unit of the focallength, distance, radius and center thickness is mm.

In which, the meaning of the various symbols is as follows.

f: The focal length of the camera lens;

f1: The focal length of the first lens;

f2: The focal length of the second lens;

f3: The focal length of the third lens;

f4: The focal length of the fourth lens;

f5: The focal length of the fifth lens;

f6: The focal length of the sixth lens;

Fno: F value;

2ω: Field;

S1: Aperture;

R: The curvature radius of the optical surface, the central curvatureradius in case of lens;

R1: The curvature radius of the object side surface of the first lensL1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lensL2;

R4: The curvature radius of the image side surface of the second lensL2;

R5: The curvature radius of the object side surface of the third lensL3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lensL4;

R8: The curvature radius of the image side surface of the fourth lensL4;

R9: The curvature radius of the object side surface of the fifth lensL5;

R10: The curvature radius of the image side surface of the fifth lensL5;

R11: The curvature radius of the object side surface of the sixth lensL6;

R12: The curvature radius of the image side surface of the sixth lensL6;

R13: The curvature radius of the object side surface of the glass plateGF;

R14: The curvature radius of the image side surface of the glass plateGF;

d: The thickness on-axis of the lens and the distance on-axis betweenthe lens;

d0: The distance on-axis from aperture S1 to the object side surface ofthe first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lensL1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lensL2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lensL3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lensL4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lensL5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lensL6 to the object side surface of the optical filter GF;

d13: The thickness on-axis of the optical filter GF;

d14: The distance on-axis from the image side surface to the imagesurface of the optical filter GF;

nd: The refractive power of the d line;

nd1: The refractive power of the d line of the first lens L1;

nd2: The refractive power of the d line of the second lens L2;

nd3: The refractive power of the d line of the third lens L3;

nd4: The refractive power of the d line of the fourth lens L4;

nd5: The refractive power of the d line of the fifth lens L5;

nd6: The refractive power of the d line of the sixth lens L6;

nd7: The refractive power of the d line of the glass plate GF;

vd: The abbe number;

v1: The abbe number of the first lens L1;

v2: The abbe number of the second lens L2;

v3: The abbe number of the third lens L3;

v4: The abbe number of the fourth lens L4;

v5: The abbe number of the fifth lens L5;

v6: The abbe number of the sixth lens L6;

v7: The abbe number of the glass plate GF;

IH: Image height;

TTL: Optical length (the distance on-axis from the object side surfaceof the first lens L1 to the image surface);

LB: The distance on-axis from the image side surface of the sixth lensL6 to the image surface (including the thickness of the glass plate GF);y=(x ² /R)/[1+{1−(k+1)(x ² /R ²)}^(1/2)]+A4x ⁴ +A6x ⁶ +A8x ⁸ +A10x ¹⁰+A12x ¹² +A14x ¹⁴ +A16x ¹⁶   (5)

Among them, R is a curvature radius on-axis, K is a conic index, A4, A6,A8, A10, A12, A14, A16 are aspheric surface indexes.

For convenience, the aspheric surface of each lens surface uses theaspheric surfaces shown in the above condition (5). However, the presentinvention is not limited to the aspherical polynomials form shown in thecondition (5).

Embodiment 1

FIG. 2 is a schematic diagram of the camera lens LA in accordance with afirst embodiment of the present invention. The data of table 1 includes:the curvature radius R of the object side and the image side from thefirst lens L1 to the sixth lens L6, the central distance of lens and thedistance d between lenses, the refractive power nd and the abbe numbervd. The data of table 2 includes: conic index k, aspheric surface index.

TABLE 1 R d nd νd S1 ∞ d0 = −0.350 R1 1.38956 d1 = 0.561 nd1 1.5441 ν156.04 R2 5.57788 d2 = 0.082 R3 6.77730 d3 = 0.219 nd2 1.6606 ν2 20.40 R42.91271 d4 = 0.285 R5 9.78303 d5 = 0.276 nd3 1.5441 ν3 56.04 R6 15.13284d6 = 0.108 R7 15.99095 d7 = 0.302 nd4 1.6398 ν4 23.27 R8 6.37355 d8 =0.310 R9 7.10532 d9 = 0.544 nd5 1.5441 ν5 56.04 R10 −1.71605 d10 = 0.486R11 −1.77685 d11 = 0.357 nd6 1.5441 ν6 56.04 R12 3.36565 d12 = 0.400 R13∞ d13 = 0.210 nd7 1.5168 ν7 64.17 R14 ∞ d14 = 0.253

TABLE 2 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −6.5558E−04 −5.4375E−04 8.6322E−02 −2.7718E−01 5.3073E−01 −4.7154E−011.7061E−01 2.3864E−03 R2 8.2164E−02 −1.0773E−01 2.3195E−01 −5.1210E−011.3286E+00 −2.3469E+00 2.3204E+00 −1.0053E+00 R3 −4.1642E−02 −1.8689E−012.4217E−01 −3.1336E−02 2.3387E−01 −1.5627E+00 2.5158E+00 −1.3823E+00 R41.2757E−02 −1.3056E−01 4.0016E−01 −9.3848E−01 2.2252E+00 −3.2339E+002.2792E+00 −4.7875E−01 R5 6.2201E−02 −1.2857E−01 1.6377E−01 −1.0951E+002.1149E+00 −1.7790E+00 −5.7415E−01 1.2655E+00 R6 −3.8298E+00 −3.2356E−011.0662E+00 −3.2846E+00 5.3838E+00 −5.0306E+00 2.0854E+00 −6.3910E−02 R72.3246E+00 −6.0876E−01 1.6135E+00 −3.5936E+00 5.5683E+00 −5.5762E+003.2341E+00 −8.1375E−01 R8 2.6776E−03 −5.0754E−01 8.1161E−01 −1.0491E+008.3855E−01 −2.1541E−01 −1.0293E−01 5.3170E−02 R9 −4.6253E−01 −1.6682E−013.3510E−02 2.1252E−02 −5.6884E−02 4.5911E−02 −1.4595E−02 1.6319E−03 R10−5.0282E+00 −2.8887E−02 −4.9679E−02 7.3217E−02 −2.8189E−02 2.8317E−034.6712E−04 −8.4271E−05 R11 −7.6988E+00 −2.3314E−01 1.6864E−01−5.7082E−02 1.1976E−02 −1.6806E−03 1.4928E−04 −6.2829E−06 R12−3.1205E+01 −1.0881E−01 6.8052E−02 −3.0327E−02 8.5381E−03 −1.4890E−031.4455E−04 −5.8533E−06

Table 7 shows the various values of the embodiments 1, 2, 3, and thevalues corresponding with the parameters which are already specified inthe conditions (1)˜(4).

As shown in Table 7, the embodiment 1 satisfies the conditions (1)˜(4).

In this embodiment, the longitudinal aberration of the camera lens LA isshown in FIG. 3, the lateral color of the camera lens LA is shown inFIG. 4, and the field curvature and distortion of the camera lens LA isshown in FIG. 5. In addition, the field curvature S in FIG. 5 is a fieldcurvature corresponding to sagittal image surface, T is a fieldcurvature corresponding to tangent image surface. This is the same as inembodiment 2 and embodiment 3. As shown in FIG. 3 to FIG. 5, the cameralens LA of embodiment 1 is TTL/IH=1.390, Fno=2.00, hence the camera lensLA has an excellent optical characteristics with ultra-thin and highlight flux (Fno).

Embodiment 2

FIG. 6 is a schematic diagram of a camera lens LA in accordance with asecond embodiment of the present invention. The data of table 3includes: the curvature radius R of the object side and the image sidefrom the first lens L1 to the sixth lens L6, the central distance oflens and the distance d between lenses, the refractive power nd and theabbe number vd. The data of table 2 includes: conic index k, asphericsurface index.

Table 3 and table 4 show the design data of the camera lens LA inembodiment 2 of the present invention.

TABLE 3 R d nd νd S1 ∞ d0 = −0.350 R1 1.42600 d1 = 0.540 nd1 1.5441 ν156.04 R2 6.69666 d2 = 0.104 R3 7.26262 d3 = 0.240 nd2 1.6606 ν2 20.40 R42.88337 d4 = 0.223 R5 8.28941 d5 = 0.399 nd3 1.5441 ν3 56.04 R6 13.39059d6 = 0.100 R7 14.02012 d7 = 0.300 nd4 1.6398 ν4 23.27 R8 5.64043 d8 =0.237 R9 7.89326 d9 = 0.639 nd5 1.5441 ν5 56.04 R10 −1.50359 d10 = 0.450R11 −1.79659 d11 = 0.349 nd6 1.5441 ν6 56.04 R12 2.80996 d12 = 0.400 R13∞ d13 = 0.210 nd7 1.5168 ν7 64.17 R14 ∞ d14 = 0.236

TABLE 4 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −3.0010E−02 −4.9062E−03 9.7838E−02 −3.0189E−01 5.1783E−01 −4.4915E−012.0283E−01 −3.9863E−02 R2 7.4761E+00 −1.0102E−01 2.0986E−01 −4.9641E−011.3373E+00 −2.3841E+00 2.2795E+00 −8.9454E−01 R3 6.5983E−01 −1.8719E−012.5401E−01 −2.9911E−02 2.4603E−01 −1.5992E+00 2.4205E+00 −1.1719E+00 R4−2.6424E+00 −1.4499E−01 4.5547E−01 −9.6951E−01 2.0941E+00 −3.2131E+002.5924E+00 −6.9704E−01 R5 1.3828E+01 −1.1925E−01 1.2842E−01 −9.8380E−012.2771E+00 −2.0620E+00 −1.2937E+00 2.0740E+00 R6 −1.2276E+03 −3.5496E−011.0945E+00 −3.2933E+00 5.2979E+00 −4.9930E+00 2.2023E+00 −1.9272E−01 R7−1.9447E+03 −6.4360E−01 1.5628E+00 −3.6124E+00 5.6009E+00 −5.5392E+003.2378E+00 −8.3023E−01 R8 −2.6444E+01 −5.2754E−01 7.9042E−01 −1.0451E+008.4465E−01 −2.0723E−01 −9.7377E−02 4.5187E−02 R9 −6.4685E+01 −1.7230E−012.9639E−02 1.3099E−02 −5.9074E−02 4.9503E−02 −1.4472E−02 4.9010E−04 R10−4.0414E+00 −1.8994E−02 −5.1140E−02 7.2708E−02 −2.8073E−02 2.9036E−034.7146E−04 −9.4502E−05 R11 −8.4749E+00 −2.3870E−01 1.6965E−01−5.7001E−02 1.1966E−02 −1.6854E−03 1.4857E−04 −6.1267E−06 R12−2.2391E+01 −1.0889E−01 6.8181E−02 −3.0296E−02 8.5275E−03 −1.4891E−031.4461E−04 −5.9102E−06

As shown in Table 7, the embodiment 2 satisfies the conditions (1)˜(4).

In this embodiment, the longitudinal aberration of the camera lens LA isshown in FIG. 7, the lateral color of the camera lens LA is shown inFIG. 8, and the field curvature and distortion of the camera lens LA isshown in FIG. 9. As shown in FIG. 7 to FIG. 9, the camera lens LA ofembodiment 2 is TTL/IH=1.401, Fno=2.00, hence the camera lens LA has anexcellent optical characteristics with ultra-thin and high light flux(Fno).

Embodiment 3

FIG. 10 is a schematic diagram of a camera lens LA in accordance with athird embodiment of the present invention. The data of table 5 includes:the curvature radius R of the object side and the image side from thefirst lens L1 to the sixth lens L6, the central distance of lens and thedistance d between lenses, the refractive power nd and the abbe numbervd. The data of table 2 includes: conic index k, aspheric surface index.

Table 5 and table 6 show the design data of the camera lens LA inembodiment 3 of the present invention.

TABLE 5 R d nd νd S1 ∞ d0 = −0.350 R1 1.43095 d1 = 0.571 nd1 1.5441 ν156.04 R2 8.47348 d2 = 0.069 R3 9.26762 d3 = 0.237 nd2 1.6606 ν2 20.40 R43.10630 d4 = 0.199 R5 10.79963 d5 = 0.395 nd3 1.5441 ν3 56.04 R616.55943 d6 = 0.123 R7 7.54832 d7 = 0.297 nd4 1.6398 ν4 23.27 R8 4.88656d8 = 0.269 R9 7.01352 d9 = 0.556 nd5 1.5441 ν5 56.04 R10 −2.21482 d10 =0.531 R11 −1.81570 d11 = 0.349 nd6 1.5441 ν6 56.04 R12 4.04127 d12 =0.400 R13 ∞ d13 = 0.210 nd7 1.5168 ν7 64.17 R14 ∞ d14 = 0.187

TABLE 6 Conic Index Aspherical Surface Index k A4 A6 A8 A10 A12 A14 A16R1 −1.2387E−01 −1.7564E−02 1.0869E−01 −3.2413E−01 5.0000E−01 −4.4666E−012.0145E−01 −5.1835E−02 R2 −6.7679E+01 −1.2837E−01 2.2016E−01 −4.7366E−011.3087E+00 −2.4376E+00 2.2520E+00 −8.1169E−01 R3 −3.9228E+01 −1.9407E−012.8836E−01 −7.1262E−03 2.4867E−01 −1.6329E+00 2.3914E+00 −1.0941E+00 R4−3.6858E+00 −1.4707E−01 4.8424E−01 −9.7710E−01 2.0794E+00 −3.2386E+002.5664E+00 −3.9960E−01 R5 −1.4209E+01 −1.2396E−01 1.0416E−01 −9.9619E−012.3786E+00 −1.9283E+00 −1.3858E+00 2.3508E+00 R6 −1.0621E+03 −3.6571E−011.0954E+00 −3.3211E+00 5.3354E+00 −4.8708E+00 2.3764E+00 −4.5400E−01 R7−1.1758E+02 −6.1002E−01 1.5318E+00 −3.6691E+00 5.6160E+00 −5.4344E+003.2891E+00 −9.9413E−01 R8 8.2978E−01 −5.1907E−01 7.7822E−01 −1.0440E+008.4423E−01 −2.1249E−01 −1.0051E−01 4.9708E−02 R9 −6.0803E+01 −1.8677E−012.0047E−02 1.8694E−02 −5.4403E−02 4.6253E−02 −1.5829E−02 2.1600E−03 R10−5.9224E+00 −3.4395E−02 −5.2087E−02 7.3349E−02 −2.7852E−02 2.9030E−034.5504E−04 −9.9737E−05 R11 −5.0561E+00 −2.2966E−01 1.6954E−01−5.7179E−02 1.1936E−02 −1.6863E−03 1.4950E−04 −6.0575E−06 R12−5.4583E+01 −1.0465E−01 6.7731E−02 −3.0346E−02 8.5489E−03 −1.4884E−031.4432E−04 −5.9011E−06

As shown in Table 7, the embodiment 3 satisfies the conditions (1)˜(4).

In this embodiment, the longitudinal aberration of the camera lens LA isshown in FIG. 11, the lateral color of the camera lens LA is shown inFIG. 12, and the field curvature and distortion of the camera lens LA isshown in FIG. 13. As shown in FIG. 11 to FIG. 13, the camera lens LA ofembodiment 3 is TTL/IH=1.390, Fno=2.00, hence the camera lens LA has anexcellent optical characteristics with ultra-thin and high light flux(Fno).

Table 7 shows the various values of the embodiments 1, 2, 3, and thevalues corresponding with the parameters which are already specified inthe conditions (1)˜(4). In addition, the units of the various valuesshown in table 5 respectively are 2 ω(°), f (mm), f1 (mm), f2 (mm), f3(mm), f4 (mm), f5 (mm), f6 (mm) TTL (mm), LB (mm), IH (mm).

TABLE 7 Embodiment 1 Embodiment 2 Embodiment 3 Notes f3/f 13.129 10.50014.500 Condition (1) (R5 + R6)/(R5 − R6) −4.657 −4.250 −4.750 Condition(2) (R11 + R12)/(R11 − R12) −0.309 −0.220 −0.380 Condition (3) d10/f0.128 0.121 0.138 Condition (4) TTL/IH 1.390 1.401 1.390 Fno 2.00 2.002.00 2ω 79.4 80.9 78.9 f 3.805 3.707 3.843 f1 3.248 3.214 3.077 f2−7.912 −7.401 −7.184 f3 49.956 38.922 55.723 f4 −16.770 −14.960 −22.647f5 2.597 2.378 3.161 f6 −2.086 −1.962 −2.255 TTL 4.393 4.427 4.393 LB0.863 0.846 0.797 IH 3.160 3.160 3.160

In which, the meaning of the various symbols is as follows.

LA: The camera lens;

S1: Aperture;

L1: The first lens;

L2: The second lens;

L3: The third lens;

L4: The fourth lens;

L5: The fifth lens;

L6: The sixth lens;

GL: The glass plate;

R1: The curvature radius of the object side surface of the first lensL1;

R2: The curvature radius of the image side surface of the first lens L1;

R3: The curvature radius of the object side surface of the second lensL2;

R4: The curvature radius of the image side surface of the second lensL2;

R5: The curvature radius of the object side surface of the third lensL3;

R6: The curvature radius of the image side surface of the third lens L3;

R7: The curvature radius of the object side surface of the fourth lensL4;

R8: The curvature radius of the image side surface of the fourth lensL4;

R9: The curvature radius of the object side surface of the fifth lensL5;

R10: The curvature radius of the image side surface of the fifth lensL5;

R11: The curvature radius of the object side surface of the sixth lensL6;

R12: The curvature radius of the image side surface of the sixth lensL6;

R13: The curvature radius of the object side surface of the glass plateGF;

R14: The curvature radius of the image side surface of the glass plateGF;

d: The thickness on-axis of the lens and the distance on-axis betweenthe lens;

d0: The distance on-axis from aperture S1 to the object side surface ofthe first lens L1;

d1: The thickness on-axis of the first lens L1;

d2: The distance on-axis from the image side surface of the first lensL1 to the object side surface of the second lens L2;

d3: The thickness on-axis of the second lens L2;

d4: The distance on-axis from the image side surface of the second lensL2 to the object side surface of the third lens L3;

d5: The thickness on-axis of the third lens L3;

d6: The distance on-axis from the image side surface of the third lensL3 to the object side surface of the fourth lens L4;

d7: The thickness on-axis of the fourth lens L4;

d8: The distance on-axis from the image side surface of the fourth lensL4 to the object side surface of the fifth lens L5;

d9: The thickness on-axis of the fifth lens L5;

d10: The distance on-axis from the image side surface of the fifth lensL5 to the object side surface of the sixth lens L6;

d11: The thickness on-axis of the sixth lens L6;

d12: The distance on-axis from the image side surface of the sixth lensL6 to the object side surface of the optical filter GF;

d13: The thickness on-axis of the optical filter GF;

d14: The distance on-axis from the image side surface to the imagesurface of the optical filter GF.

It is to be understood, however, that even though numerouscharacteristics and advantages of the present exemplary embodiments havebeen set forth in the foregoing description, together with details ofthe structures and functions of the embodiments, the disclosure isillustrative only, and changes may be made in detail, especially inmatters of shape, size, and arrangement of parts within the principlesof the invention to the full extent indicated by the broad generalmeaning of the terms where the appended claims are expressed.

What is claimed is:
 1. A camera lens comprising, from an object side toan image side in sequence: a first lens having a positive refractivepower, a second lens having a negative refractive power, a third lenshaving a positive refractive power, a fourth lens having a negativerefractive power, a fifth lens having a positive refractive power, and asixth lens having a negative refractive power; wherein the camera lensfurther satisfies the following conditions (1)˜(3):10.00≤f3/f≤15.00  (1)−4.80≤(R5+R6)/(R5−R6)≤−4.20  (2)−0.40≤(R11+R12)/(R11−R12)≤−0.20  (3) where f: the focal length of thecamera lens; f3: the focal length of the third lens; R5: the curvatureradius of the object side surface of the third lens; R6: the curvatureradius of the image side surface of the third lens; R11: the curvatureradius of the object side surface of the sixth lens; R12: the curvatureradius of the image side surface of the sixth lens.
 2. The camera lensas described in claim 1 further satisfying the following condition (4):0.12≤d10/f≤0.14  (4) where f: the focal length of the camera lens; d10:the distance on-axis from the image side surface of the fifth lens tothe object side surface of the sixth lens.